Extract bearer token from cookies

### Description

When there is no bearer token present in the authentication header. The adapter should look through cookies to see if a bearer token is present there. If a bearer token is present, the adapter should use that one, instead of throwing a `No bearer in header` error.

### Discussion

_No response_

### Motivation

When the bearer token is stored in a cookie, the adapter can't find the bearer token. Making it throw a 'No bearer in header' error.
I would like to use a cookie to store my bearer token instead of putting it in a header. While being able to retrieve permissions from keycloak.

### Details

I'm willing to make a PR to address this.

No file or test is named. Start by locating the adapter path that raises the `No bearer in header` error and inspect how the request's authentication header and cookies are exposed; done means a bearer token in cookies is used when the header has none, without changing the existing header behavior.

Written by the indexing model from the issue text.